Attic Hvac Requirements

The california energy commission updates the building energy efficiency standards title 24 parts 6 and 11 every three years by working with stakeholders in a public and transparent process.

Attic hvac requirements.

Attic furnace passageway and service area electrical requirement. Duct leakage causes a lot of problems including less. Attic hvac systems save space. Attic ventilation works on the principle that heated air naturally rises primarily utilizing two types of vents.

Most updated central air conditioned homes have a new air conditioner split system meaning the ac is broken up into parts. First off attic installations are among my least favorite applications from a serviceability system longevity and a laundry list of other items. Insulation level are specified by r value. The intent of this tip sheet is to provide a general understanding of the code requirements and does not address the subject in great detail.

Sometimes air conditioned air will seep right through your ducts and become useless instead of heating and cooling your home. These are significant challenges. To continue locating hvac systems in the attic space. Vented attics can be effective as long as hvac ducts are not located in them and the ceiling deck is well air sealed and insulated.

So why put an hvac system up in the attic at all. Here s why that is a good thing. Attic furnace access passageway and platform. Attic hvac systems also require shorter ducts.

Attic and hvac requirements. Traditionally building codes have required attic ventilation. The following are attic furnace installation requirements based on 2009 irc and 2009 imc the codes refer to it as appliances in attics. Additional information can be obtained from your local.

The higher the r value the better the thermal performance of the insulation. An outdoor unit which houses the fan condenser and compressor and an indoor unit which holds the evaporator and fan. One of the main purposes of the 2016 energy code is to cut down on the amount of energy that home owners use on a regular basis. Well mainly it s a way to save space.

Intake vents located at the lowest part of the roof under the eaves. Attic furnace installation must comply with you local mechanical code or imc international mechanical code if such was adopted in your area. R value is a measure of insulation s ability to resist heat traveling through it. Posted february 3 2017 by rick cowperthwaite.

There will be less duct leakage. Residential attic hvac equipment july 1 2016 this tip sheet reflects code requirements of the 2015 international residential code irc. Here in florida it s just a bad idea due to the high humidity and temperature in a vented attic and the condensation issues that can and usually does occur on the equipment. 2016 energy code changes.